title: 2-[1'-(Benz-yloxy)spiro-[indane-1,2'-pyrrolidine]-5'-yl]aceto-nitrile.
abstract: In the title compound, C21H22N2O, the planes of the two six-membered rings make a dihedral angle of 89.51 (7)°. The pyrrolidine ring has a puckering amplitude q 2 = 0.418 (3) and a pseudo-rotation phase angle ϕ2 = -166.8 (5), adopting a twist conformation (T). The other five-membered ring has a puckering amplitude q 2 = 0.247 (2) and a pseudo-rotation phase angle ϕ2 = -173.7 (5), adopting an envelope conformation with the CH2 atom adjacent to the C atom common with the pyrrolidine ring as the flap. In the crystal, mol-ecules are linked via C-H⋯N, enclosing R (2) 2(20) rings, forming chains propagating along [100]. The aceto-nitrile group is disordered over two positions and was refined with a fixed occupancy ratio of 0.56:0.44.
authors.affiliation: Departamento de Química, Facultad de Ciencias, Universidad del Valle, Apartado 25360, Santiago de Cali, Colombia.
authors.forename: Rodolfo
authors.initials: R
authors.lastname: Moreno-Fuquen
authors.forename: Diana M
authors.initials: DM
authors.lastname: Soto
authors.forename: Luz M
authors.initials: LM
authors.lastname: Jaramillo-Gómez
authors.forename: Javier
authors.initials: J
authors.lastname: Ellena
authors.forename: Juan C
authors.initials: JC
authors.lastname: Tenorio